Gottlieb yung



(No Model.)

G. YUNG. WIINDOW JACK.

Patented Apr. 27, 1897.

n as?! 00.9)401 LTHO Asmmmu n c NITED STATES PATENT FFICE.

GOTTLIEB YUNG, OF COLUMBIA, PENNSYLVANIA.

WIN DOW-JAG K.

SPECIFICATION forming part of Letters Patent No. 581 ,325, dated April27, 1897.

Application filed March 2,1896. Serial No. 581,454. (No model.)

To all whom it may concern.-

Be it known that I, GOTTLIEB YUNG, acitizen of the United States,residing at Columbia, in the county of Lancaster, State of Pennsylvania,have invented certain Improvements in \VindoW-Jacks, of which thefollowing is a specification. V

This invention relates to improvements in that class of builders jackswhich are projected through windows or other openings, the constructionherein described being mo re particularly adapted to the use ofhousekeepers for cleaning windows; and the object of the invention is toafford a cheap portable jack, either or both ends of which can be usedwhen the same is extended through a window and which is provided withmeans for assuring the safety of the more. timid domestics employing thesame.

The invention consists in the construction and combination of thevarious parts, as hereinafter fully described, and then pointed out inthe claims.

In the accompanying drawings, forming part of this specification, Figure1 is a top plan view of a jack embodying my invention; Fig. 2, a sideelevation of the same, showing the jack securedin place on awindow-sill; and Fig. 3, a vertical section on broken line 3 3 of Fig.1.

Referring to the details of the drawings, A indicates the wall of ahouse; A, the floor of a room; B, a window-sill, and b the insidemolding or ledge of the sill.

D indicates the platform or tread of the jack, beneath the outer end ofwhich is the usual bracket'or brace, comprising the two legs d and twostruts d, and around the extremity and sides of this end is arim d thatprevents the foot from being accidentally moved from the platform.

E represents two posts hinged, asat e, to the sides of the platform nearand outside of the inner ends of rim (Z and on the inside of said rim,toward the outer extremity of the platform, are hinged the outer ends ofthe side bars F of a ladder F, as shown at f. The inner ends of theseside bars are provided with hooks f formed to take over a rail E,connecting the free ends of posts E when said posts are elevated. Thisconstruction is adapted to be raised, so as to permit an operative towork higher than points that could be reached from the platform itself.With this end in view the free ends of the posts are raised and swinginward far enough to permit the free end of the ladder to be elevatedand clear rail E. Then said posts are pushed forward into a verticalposition and the ladder is lowered and hooks f engaged over rail E, asillustrated by broken lines'R, Fig. 2. When the post-s are lowered tothe position shown by full lines in Figs. 1 and 2, the rail E rests innotches or grooves e in rim (1 To steady the operator, a post D may berigidly secured to one or both sides of the platform at the inner end ofrim (1 G indicates a sleeve that takes over the inner end of platform D,and it has hangers G on the ends thereof, through the lower ends ofwhich are threaded perforations g. Through perforations g workthumb-screws H, the ends whereof are adapted to take against the side ofthe window-frame beneath the inside molding 1). Vhen the jack is inplace on a window-sill, as seen in Fig. 2, sleeve G is pushed up to saidsill, and the thumb-screws H are screwed up with their inner endsbeneath molding I) to prevent uptilting of the jack by any weight on theouter end thereof.

To avoid injury to the window-frame by the ends of screws H, a plate Mis interposed between said frame and the ends of the screws H, the screwends engaging sockets in plate M,.as shown by broken lines min Figs. 1and 2. Collar G is prevented from slipping inward by two pins P, adaptedto engage any of longitudinal series of perforations P in each side ofplatfor If In the center 1e inner end of platform D is a slot or recess,through which passes a vertical post N, provided with a vertical seriesof perforations at, through the one of which immediately below platformD is inserted a pin n,. that supports the inner end of said platform henthe sameis loaded.

To the bottom 0 the outer end of the platform is attached a hook S,whereby, when two jacks are projected from different windows, ascaffolding or other support may be sustained between them.

As will be perceived, my invention provides for the support of personsusing either one or both ends of the jack, while the two screws forpreventing the raising of the inner end of the platform also prevent anypossible tilting of the same laterally.

I do not confine myself to the details of the construction herein shownand described, as it is obvious that many changes may be made thereinwithout departing from the spirit and scope of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1'. The combination, in a window-jack, of a platform adapted to have theinner end thereof project back into the building, means for upholdingthe outer end of the platform, a post constructed to rest loosely on thefloor of said building, and a connection between sai post and said innerend of the platform, whereby the said connection can be verticallyadjusted, for the purpose specified.

The combination, in a window-jack, of a platform adapted to have theinner end thereof project back into the building, means for upholdingthe outer end of the platform, a post constructed to rest loosely on thefloor of said building and passing vertically through a slot in saidinner end of the platform, and a vertically-adjustable connectionbetween the post and the platform, for the purpose specified.

The combination, in a window-jack, of

a platform adapted to have the inner end,

said platform with any one of the perforations of said series, for thepurpose specified.

4. The combination, in a Window-jack, of a platform, a device having oneend hinged to the platform between the ends thereof and adapted to havethe other end elevated, and a ladder hinged to the platform between anend thereof and the hinge of said device, the free end of the ladderwhen elevated being supported by said device, said device andthe ladderbeing adapted to be folded down on the platform, for the purposespecified.

5. The combination, in a window-jack, of a platform, posts hinged to theplatform between the ends thereof and having their free ends connectedby a rail, a ladder hinged to the platform outside of the hinged ends ofthe posts, and a hook on the swinging end of the ladder adapted to takeover said rail when the posts are elevated, for the purpose specified.

(3. The combination, in a Window-jack, of a platform, a sleeve takingover the inner end of the platform and having a hanger on each endthereof, screws working through openings in the hangers and adapted totake under a ledge, a post adjustably connected with the inner end ofthe platform, posts hinged to the platform between the ends thereof andhaving their free ends connected by a rail, and a ladder hinged to theouter end of the platform and having hooks on the swinging end thereofadapted to take over said rail when the posts supporting the same areelevated, substantially as and for the purpose specified.

GOTTLIEB YUNG.

\Vitnesses:

0. G. BASSLER, WM. R. GERHART.

